Persistent Systems Software Engineer Interview Questions, Process, and Tips

Online Aptitude test as usual. Not very tough.

Online coding tests as usual. Not very tough. But the time is less so there might be time crunch.

Q1. SHL automated HR questions
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Basic apti questions along with technical mcqs

2 coding questions , 1 is basic, 1 is medium

Q1. Explain your projects?
Ans. 
I have worked on various projects including developing web applications, creating mobile apps, and implementing machine learning algorithms.
• Developed a web application for a retail company to manage inventory and sales data

• Created a mobile app for a fitness tracker that records user's daily activities and provides personalized workout plans

• Implemented machine learning algorithms for sentiment analysis on social media d
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Q2. Explain any one of data structure you know
Ans. 
Binary Search Tree
• A binary tree where each node has at most two children

• Left child is less than parent, right child is greater

• Allows for efficient searching, insertion, and deletion
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Q3. Explain NLP in brief and how related with your project?
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Q4. Tell me more about deep learning?
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Q5. What are the recommendation systems you worked on?
Ans. 
I have worked on building recommendation systems for e-commerce websites and streaming platforms.
• Implemented collaborative filtering algorithms to recommend products based on user behavior

• Utilized content-based filtering to suggest movies or TV shows based on user preferences

• Developed hybrid recommendation systems combining collaborative and content-based filtering techniques
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Basic array and strings

Q1. Difference between Interface and abstract class.
Ans. 
Interface is a contract that defines the methods a class must implement. Abstract class can have concrete methods and fields.
• Interface cannot have method implementations, only method signatures.

• A class can implement multiple interfaces but can only extend one abstract class.

• Abstract class can have constructors, fields, and non-abstract methods.

• Interfaces are used to achieve multiple inheritance in Java.

• Example: Interfa...read more
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Q2. What is virtual function
Ans. 
A virtual function is a function in a base class that is overridden in a derived class, allowing polymorphic behavior.
• Virtual functions are declared in a base class with the 'virtual' keyword.

• They are meant to be overridden in derived classes to provide specific implementations.

• Virtual functions enable polymorphism, allowing objects of different derived classes to be treated as objects of the base class.

• Example: virtua...read more
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Q1. Why you want to join
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Q2. Introduction of yourself
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Two easy level coding questions and apti questions

Q1. Pattern problem
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Q2. Simple linked list, oops questions
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Q1. Python related questions
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Q2. Regex matcher problem
Ans. 
Regex matcher problem involves matching patterns in strings using regular expressions.
• Understand the requirements of the regex pattern to be matched

• Use tools like regex101.com to test and validate the regex pattern

• Consider special characters and escape sequences in the regex pattern
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Q3. 3 wheels & one scooter, each wheel can travel 5km. What will be the max distance that can be travelled?
Ans. 
The max distance that can be traveled is 15km.
• Each wheel can travel 5km, so with 3 wheels, the total distance is 15km.

• The scooter itself does not limit the distance that can be traveled, only the wheels do.
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Q1. Introduction and salary
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Verbal, quantitative and logical reasoning

Competitive coding were asked and there was 2 questions

Basic CSE MCQ questions

Arrays, Strings. And both the problem were to be solved in 1hr.

Q1. Intro and basic technical ques.
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Q2. 4 to 5 coding question with sql queries
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Q1. Coding question on graph and one array related question.
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Q2. Asked me about my college events. And confirmed whether I participated in any Hackathon.
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Q1. It was a behavioural mcq test
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Hackerrank assesment DSA quesntions

Q1. SQL Queries, OOPS concepts
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Q2. DSA medium level quesn
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Q1. Why this compny
Ans. 
I chose this company because of its innovative projects, strong company culture, and opportunities for growth.
• Innovative projects: I was impressed by the company's work on cutting-edge technologies such as AI and machine learning.

• Strong company culture: I value a supportive and inclusive work environment, which I believe this company provides.

• Opportunities for growth: I see potential for career advancement and skill de
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